Barbara Simner suspects that her husband Ken is trying to kill her because of several so-called mishaps. She refuses to call the police, but they get involved when she is run down by a runaway tractor. Oscar Blaketon wants the "Best Kept Village" award to go to Aidensfield. A hindrance to this goal is a number of molehills, but Vernon Scripps has an all-purpose pesticide powder which should do the trick. And a potent stuff it is. David passes out while using it and Dr. Merrick suspects it to be very poisonous. The smell of it is surely strong enough to scare everybody away. Even the moles. Gina's friend Diane moves into the Aidensfield Arms to help her during the final stages of her pregnancy. Diane quickly sets her sights on PC Crane. Meanwhile Phil Bellamy is more preoccupied with finding a best man for his wedding to Gina than his police work.